Roofing.



No. 648,343. Patented Apr. 24, I900.

I T. P. FLANAGAN.

ROOFING.

(Application flld Feb. 14, 1900.

(No Model.)

j d -Z WITNESSES INVENTOR 6M -61 Jag 0.11.04 I

- A TTORNEY NlTED STATES PATENT OFFICE.

THOMAS P. FLANAGAN, OF NEW YORK, N. Y.

.ROOFIVNG.

SPECIFICATION forming part of Iietters Patent N 0. 648,343, dated April24, 1900. Application filed February 14, 1900- Serial No. 5,139. (Nomodel-J To all whom it may concern.-

Be it known that LTHOMAS P. FLANAGAN, a citizen of the United States ofAmerica, and a resident of the borough of Brooklyn,NewYork city, andState of New York, have invented certain new and usefullmprovements inRoofing, of which the following is a specification.

My invention relates to improvements in standing lock-joints insheet-metal roof-covering contrived for securing the sheets withoutnailing; and it consists of improvements in the construction of thelocks for securing the sheets, whereby the wood strips heretofore usedfor securing the sheets to the roofboards are not required, the mannerof applying the sheets is simplified, and an economy in cost isattained, as hereinafter described, reference being made to theaccompanying drawings, in which- Figure 1 is an end elevation of a roofon which the covering-sheets are secured in accordance with myinvention. Fig. 2 is a side elevation of part of such a roof. Fig. 3 isa detail in section on line 3 3, Fig. 2, enlarged. Fig. t is a detail insection on line 44., Fig. 3. Fig. 5 is a detail showing the manner ofapplying the covering-sheets and securing them in position.

The covering-strips a have a hollow rib produced along one margin,comprising the upturned web 6, cover a, two laterallyoffset dovetailribs d, and the pendent flange e, and also have the upturned flange falong the other margin, and locking-posts are provided for attaching tothe roof-boards g at intervals along the range of the said ribs up anddown the roof-boards, also for attaching to the ridge-piece for securinga like hollow rib thereto, said locking-posts comprising a hollowstructure, preferably constructed of sheet metal, whereof two uprightsides It, having base-flanges vj for attachment to the roofboards and atop part Z and being as wide as the distance between upright web I) andflange e of the ribs, are joined and soldered at their edges to twoother shorter sides m, respectively, between the upper ends of which andthe top Z are open spaces 71., through which the bevel hook-heads o ofsprings 19, riveted at q to the lower ends and insides of side m of theposts, project to hook into the dovetail offsets d of the ribs when saidribs are pressed down over the posts, as indicated in Fig. 5, to securethe ribs, said hooks being forced back by parts 19 and e of the ribs.This avoids the necessity of sliding the sheets upward along securingdevices having fixed hook elements, as now practiced and which'is verydifiicult. These locking-posts may be formed of sheetmetal parts cut insuitable parts and shaped and secured together as indicated in thedrawings, or they may be cast or struck up in dies, as preferred.

The ribs of the covering-sheets will be produced in any of thewell-known ways of bending and shaping the margins of metal sheets.

While the hollow form of post herein represented may be preferable, itis obvious that other equivalent forms of posts merely re= cessed, forinstance, to receive the hook-heads 0, but otherwise not necessarilydescribed as hollow, may be used, and I do not limit myself to thespecific form shown.

What I claim as my invention is- The combination with the roof-boardsand the metal covering-sheets having a hollow rib along one margin,which is laterally offset in dovetailform in the upper part of eachside, of hollow or recessed securing-posts adapted to be secured to theroof-boards, and provided with spring-hooks which permit the ribs to bepressed down on the posts, and then look them thereon by hooking intothe offsets of the ribs.

Signed by me at New York, N. Y., this 8th day of February, 1900.

THOMAS P. FLANAGAN.

Witnesses:

A. P. THAYER, C. SEDGWIOK.

